Navcon Engineering measured Sound Pressure Levels within a plant. Data was processed with the SoundPLAN Cartography Module [High sound levels : red / blue color Lower sound levels: yellow / green colors]. The noise survey was repeated after a period of 6 years. The noise difference between the two data sets were computed and plotted as a Difference Map.

Contouring Spectral Data : The data was collected in 1/3 octave band within a plant. The data was also processed to visualize the magnitude of the noise levels on a frequency by frequency base. The map shows the 1/3 octave data set from the 1.6 kHz to the 10 kHz.

[Note: The DXF plant layout is superimposed on top of the map to pin point source in respect to the measured noise levels.]